MPHLGCAL CHAACTESATN BTED MAE (Zea mays L.) GENTPES

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dc.contributor.advisorN. V., SONI
dc.contributor.authorAMA PAHLADBHA, DASALANA
dc.date.accessioned2024-07-31T06:26:45Z
dc.date.available2024-07-31T06:26:45Z
dc.date.issued2021-12-30
dc.description.abstractMaize (Zea mays L.) belongs to family Poaceae is an important allogamous cereal crop. The present investigation entitled “Morphological characterisation of biofortified maize (Zea mays L.) genotypes” was carried out using forty-five genotypes to determine the extent of genetic variability, heritability, genetic advance, correlation and path analysis. The experiment included three replications and was set up in a randomised block design at Maize Research Station, Sardarkrushinagar Dantiwada Agricultural University, Bhiloda during Rabi 2019-20. The observations were recorded for seventeen different traits viz., days to tasseling, days to silking, anthesis-silking interval, days to maturity, plant height (cm), primary ear height (cm), cob length (cm), cob girth (cm), number of kernel row per ear, number of kernel per row of cob, 100-kernels weight (g), cob weight per plant, shelling percentage, iron content (ppm), zinc content (ppm), β-carotene content (ppm) and kernel yield per plant (g). The differences across all genotypes were significant, indicating that there was considerable amount of variability for all the traits under study. The genotypes IMR 29 (early tasseling and silking), IMR 28 (less anthesis-silking interval), IMR 50 (early maturity), IMR 29 (maximum plant height), IMR 36 (maximum primary ear height, 100-kernels weight), IMR 15 (maximum cob length, cob girth, cob weight per plant and kernel yield per plant), IMR 4 (maximum number of kernel row per cob), IMR 3 (maximum number of kernel per row of cob) and IMR 20 (highest shelling percentage), IMR 47 (highest iron and zinc content) and IMR 10 (highest β-carotene) recorded the best performance among all the genotypes. Genotypes, IMR 15, IMR 34, IMR 20, IMR 3 and IMR 20 genotypes performed better in terms of kernel yield per plant; IMR 47, IMR 44 and IMR 50 recorded for superior iron content, IMR 47, IMR 16 and IMR 15 Abstract ii for better zinc content; IMR 10, IMR 8 and IMR 9 observed best for β-carotene among all genotypes as per the total experimental results. In the current study high genotypic and phenotypic coefficient of variation was observed for β-carotene content and iron content. Broad sense heritability was high for iron content, β-carotene content, zinc content, primary ear height, plant height, days to tasseling, days to silking and kernel yield per plant. High heritability coupled with high genetic advance as per cent of mean was observed for iron content, β-carotene content, zinc content, primary ear height, and kernel yield per plant, indicating the presence of additive genes and less environmental influence on the characters. In correlation studies, kernel yield per plant was significant and positively correlated with plant height, primary ear height, cob length, cob girth, number of kernel row per cob, number of kernel per row of cob, 100-kernel weight, cob weight per plant, shelling percentage and zinc content at both genotypic and phenotypic level. The path analysis revealed that cob weight per plant, days to silking, shelling percentage, plant height, cob length, iron content, primary ear height and days to maturity exhibited positive direct effect on kernel yield per plant. Negative direct effect was observed through days to tasseling, anthesis-silking interval, number of kernel row per cob, number of kernel per row of cob, 100 - kernel weight, β-carotene content, zinc content, and cob girth. The genotypes, IMR 15, IMR 47, and IMR 10 can be use as the parents for future hybridization purpose. Based on the correlation and path analysis it could be concluded that the traits like shelling percentage, plant height, cob length, and primary ear height could be used as selection criterion to identify the suitable genotypes for future breeding programmes.en_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810212641
dc.language.isoEnglishen_US
dc.pages134pen_US
dc.publisherSARDARKRUSHINAGAR DANTIWADA AGRICULTURAL UNIVERSITY - SARDARKRUSHINAGARen_US
dc.research.problemMPHLGCAL CHAACTESATN BTED MAE (Zea mays L.) GENTPESen_US
dc.subGenetics and Plant Breedingen_US
dc.themeMPHLGCAL CHAACTESATN BTED MAE (Zea mays L.) GENTPESen_US
dc.these.typeM.Scen_US
dc.titleMPHLGCAL CHAACTESATN BTED MAE (Zea mays L.) GENTPESen_US
dc.typeThesisen_US
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